• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    SAND COMPOSITE PRESSURE TUBE AND THERMOFIXED BAMBOO. It consists of a pressure tube made of thermosetting sand and bamboo composite that comprises a lining layer (1), an internal reinforcement layer (2), a sand glue layer (3), an external reinforcement layer ( 4) and an external protective layer (5) arranged respectively from the inside out in a radial direction thereof. The internal reinforcement layer (2) formed by rolling bamboo, a thickening layer (3) formed by agitated ore and glue and the external reinforcement layer (4) formed by rolling bamboo are arranged in sequence from the inside out between the lining layer (1) and the outer protection layer (5). The composite pressure tube saves energy and is environmentally friendly, production raw materials are recyclable and cost is low.
    公开号:BR112016009838B1
    申请号:R112016009838-2
    申请日:2014-11-04
    公开日:2021-01-12
    发明作者:Zhu Xin；Ye Ling；Yang Huiqing
    申请人:Zhejiang Xinzhou Bamboo-Based Composites Technology Co., Ltd；Ye Ling；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION
    [001] The invention relates to a thermosetting bamboo-sand composite pressure pipe that is suitable for use in the fields of agricultural irrigation, water supply and drainage and petrochemical anticorrosion. BACKGROUND OF THE INVENTION:
    [002] In current agricultural irrigation, water supply and drainage, and petrochemical anticorrosion industries, traditional tubes, such as cement tubes, polyvinyl chloride tubes, polyethylene tubes, polypropylene tubes, FRP tubes (reinforced plastic tubes with fiberglass, fiberglass-reinforced plastic mortar tubes (FRPM), steel tubes and ductile iron tubes are generally used. Cement pipes have low production costs, but low strength, high weight and leaking pipe joints. Polyvinyl chloride tubes, polyethylene tubes, polypropylene tubes are light weight, smooth and resistant to corrosion, but insufficient in rigidity and strength, and the raw materials for them are all synthetic petrochemicals. FRP tubes and FRPM tubes have strong resistance to corrosion, high strength, small resistance to fluid and high rigidity, but the raw materials of the reinforced materials in the products are fiberglass with high energy consumption. Thus, the resin is petrochemical and its products and residues are non-recyclable and polluting. Metal tubes, such as steel tubes and ductile iron tubes, have high strength, but low resistance to corrosion, high energy consumption and very pollutants. Therefore, the use of such traditional tubes not only consumes a large amount of oil and mineral resources, but also results in high energy consumption, high emissions and great depletion of non-renewable resources.
    [003] Patent Application No. CN 2009201212098 entitled "bamboo fiber winding composite pipe" reveals a structure that includes an inner lining layer, a reinforcement layer and an external protection layer arranged from the inside out in the radial direction. The reinforcement layer is a layer of bamboo fiber formed by wrapping strips of continuous bamboo fiber in the inner lining layer. The bamboo fiber layer is a circular layer of bamboo fiber strips, a spiral layer of bamboo fiber strips or a combination thereof. And at least two layers of bamboo fiber are designed. This bamboo composite tube meets advanced energy saving concepts and renewable resources, and its price is much less expensive than traditional tubes (except cement tubes). However, in some fields of application with low pressure and high rigidity, especially for agricultural irrigation, the price of this bamboo composite pipe is still high. SUMMARY OF THE INVENTION
    [004] In view of the problems described above, it is an objective of the invention to provide a thermosetting bamboo-sand composite pressure tube that saves energy and protects the environment and has renewable raw materials at low cost.
    [005] The technical scheme of the invention is as follows:
    [006] A thermosetting bamboo-sand composite pressure tube comprises: an inner lining layer, an internal reinforcement layer, an adhesive sand-thickening layer, an external reinforcement layer and an external protection layer. The inner reinforcement layer formed by wrapping bamboo strips, the thick sand-adhesive layer formed through mixed mineral sand and adhesive, and the outer reinforcement layer formed by wrapping bamboo strips are arranged respectively between the inner lining and the outer protection layer from the inside out. The invention adopts the multilayer composite structure, the internal reinforcement layer and the external reinforcement layer adopt ecological and renewable bamboo. As a resource for environmental protection and regeneration, bamboo has light weight, high strength, anti-corrosion, inexpensive price and wide distribution. The thickened sand-adhesive layer not only increases the rigidity of the pipe, but also reduces the use of bamboo, thereby further reducing the cost of production.
    [007] The bamboo strips of the inner reinforcement layer are rolled up and adhered evenly to an external surface of the inner lining layer. The adhesive sand-thickening layer comprises a mixture of mineral sand and adhesive uniformly coated on an outer surface of the inner reinforcement layer. The bamboo strips of the outer reinforcement layer are rolled and adhered evenly to an outer surface of the sand-thickening adhesive layer. When winding the bamboo strips of the inner reinforcement layer and the outer reinforcement layer, a certain amount of an amino resin is added simultaneously, and the thickness of each layer is according to the usage requirement to enable the tube to reach a projected force. In the thickening layer of adhesive sand, mineral sand that has high hardness and low cost is used. Mineral sand and resin adhesive are uniformly mixed and coated on the outer surface of the inner reinforcement layer, and the thickness of the adhesive sand thickening layer is designed according to the different usage requirement.
    [008] The bamboo strips of the internal reinforcement layer and the external reinforcement layer have a length between 0.5 and 2 m, a width between 5 and 10 mm, and a thickness between 0.3 and 1 mm. Bamboo strips of such size have low processing difficulty, high utilization, reduced production cost, and sufficient adhesion strength under conditions of cold contraction and thermal expansion.
    [009] In the inner reinforcement layer, the bamboo strips are first rolled radially to form a first radial layer to adhere to the outer surface of the inner lining layer. The bamboo strips are then rolled axially to form a first axial layer to adhere to an outer surface of the first radial layer. The winding of the bamboo strips in the radial direction and, subsequently, in the axial direction has the ability to optimize the tube loading performance.
    [010] In the outer reinforcement layer, the bamboo strips are first rolled axially to form a second axial layer to adhere to the outer surface of the sand-thickening layer. The bamboo strips are then rolled radially to form a second radial layer to adhere to an outer surface of the second axial layer. The outer reinforcement layer is wound by the bamboo strips in the axial direction and then in the radial direction, the order in which it is opposed to the winding of the inner reinforcement layer, in this way, the tube loading performance is further optimized, and the appearance of the tube is much better.
    [011] In the outer reinforcement layer, the bamboo strips are rolled radially to form a second radial layer to adhere to the outer surface of the sand-adhesive thickening layer. The external reinforcement layer can also be rolled up by the bamboo strips in the only radial direction according to different usage requirement in order to reduce the production cost to the maximum based on the guarantee of the strength of the pipe use.
    [012] The inner lining layer is formed by adhering a non-woven bamboo fiber cloth to a needled bamboo mat through an adhesive, and the thickness of the inner lining layer is between 1.2 mm and 2 , 5 mm. The inner lining layer of the material and thickness above offers anti-infiltration, anti-corrosion, hygiene and a smooth internal wall. In addition to the non-woven cloth and the needled blanket above, other types of non-woven cloth and needled blanket can be adopted according to different means of transmission.
    [013] The outer protective layer is coated on an outer surface of the outer reinforcement layer, and a thickness of the outer protective layer is between 0.5 and 1.5 mm. The external protection layer adopts anti-corrosion and waterproof materials. When the pressure pipe is used in a good external environment, the thickness of the external protective layer can be much thinner, and a minimum thickness of 0.2 mm has the capacity to satisfy the protective function.
    [014] The inner lining layer, the inner reinforcement layer, the sand-adhesive thickening layer, and the outer reinforcement layer are adhered and cured in an integrated manner. In this way, the product achieves the projected strength and rigidity, which is convenient for packaging, storage and transportation.
    [015] When compared with the prior art, the thermosetting bamboo-sand composite pressure tube, according to the modalities of the invention, has the following advantages: the thermosetting bamboo-sand composite pressure tube comprises the layer of thickening of adhesive sand, and mineral sand is used to improve the thickness of the tube, the rigidity of the tube is increased, and the material cost of the composite pressure tube is reduced. It provides high quality tubes and a competitive price for fields of application with low pressure and high rigidity such as agricultural irrigation, etc. BRIEF DESCRIPTION OF THE DRAWINGS
    [016] Figure 1 is a structure diagram of a thermosetting bamboo-sand composite pressure pipe. DETAILED DESCRIPTION OF THE MODALITIES
    [017] To further illustrate the invention, experiments that detail a thermosetting bamboo-sand composite pressure pipe are described below, in this document, combined with the drawings. EXAMPLE 1
    [018] A DN600 thermosetting bamboo-sand composite pressure pipe is primarily used in fields of main pipe technique in agricultural irrigation, drain pipes in municipal engineering, secondary pipes for sewer pipes, oil pipes and tubes of water for oil exploration and for circulating cooling water. As shown in Figure 1, the composite pressure pipe of the invention comprises: an inner liner layer 1, an inner reinforcement layer 2, a sand-adhesive thickening layer 3, an outer reinforcement layer 4 and an external protection 5. The internal lining layer 1, the internal reinforcement layer 2, the sand-adhesive thickening layer 3 and the external reinforcement layer 4 are adhered and cured respectively to the composite in an integrated manner. The outer protection layer 5 is coated on an outer surface of the outer reinforcement layer 4. The specific working process is as follows:
    [019] 1 Fresh bamboo is processed into strips of bamboo that are between 0.5 and 2 m long, between 5 and 10 mm wide and between 0.3 and 1 mm thick.
    [020] 2 A release film is coated in a polished straight tube module made of steel or a vitrified steel that has an outer diameter of 600 mm and then the inner lining layer 1 that is between 1, 2 and 2.5 mm is manufactured in the straight tube module using a resin that has excellent anti-corrosion performance, a non-woven bamboo fiber cloth and a needled bamboo mat.
    [021] 3 After the inner lining layer 1 is cured, the bamboo strips are loaded onto a winding machine and then placed evenly on the inner lining layer 1 on the straight tube module through mechanical winding, during to which an amino resin is added according to a particular formulation to form the inner reinforcement layer 2. The wrapping of the inner reinforcement layer 2 is carried out as follows: the bamboo strips are first rolled radially to form a first radial layer to adhere to the outer surface of the inner lining layer; and the bamboo strips are then rolled axially to form a first axial layer to adhere to an outer surface of the first radial layer. A thickness of the entire internal reinforcement layer 2 is 4 mm.
    [022] 4 A uniformly mixed mixture of mineral sand and adhesive is then coated on the internal reinforcement layer 2 to form the thick sand-adhesive layer 3 which is 10 mm thick.
    [023] 5 The external reinforcement layer 4 is manufactured outside the sand-adhesive thickening layer 3, the process of which is according to that of the manufacture of the internal reinforcement layer 2 except that in the external reinforcement layer 4, the strips of bamboo are first rolled axially to form a second axial layer to adhere to the outer surface of the sand-adhesive thickening layer; and the bamboo strips are then rolled radially to form a second radial layer to adhere to an outer surface of the second axial layer. The thickness of the external reinforcement layer 4 is 4 mm.
    [024] 6 After winding, the tube is heated and cured to crosslink and cure the resin to form the integrated thermosetting bamboo-sand composite pressure tube.
    [025] 7 A layer of waterproof and anti-corrosion resin with anti-radiation charge is coated outside the tube to form the outer protective layer 5 which is between 0.5 and 1 mm thick.
    [026] The tube is carried out with hydraulic test, from which it is indicated that a short time failure pressure reaches 1.2 megapascals, a stiffness reaches 10,000 N / m2 and a material density of the tube is between 1, 4 and 1.5. EXAMPLE 2
    [027] A DN300 thermosetting bamboo-sand composite pressure pipe is primarily used in fields of secondary pipe technique in agricultural irrigation, drainage pipes in municipal engineering, upper branch pipes for sewer junction pipes, oil pipe and water pipe for oil exploration and for circulating cooling water. As shown in Figure 1, the composite pressure pipe of the invention comprises: an inner liner layer 1, an inner reinforcement layer 2, a sand-adhesive thickening layer 3, an outer reinforcement layer 4 and an external protection 5. The inner lining layer 1, the internal reinforcement layer 2, the sand-adhesive thickening layer 3, and the external reinforcement layer 4 are adhered and cured respectively in an integrated manner. The outer protection layer 5 is coated on an outer surface of the outer reinforcement layer 4. The specific working process is as follows:
    [028] 1 Fresh bamboo is processed into strips of bamboo that have a length between 0.5 and 2 m, a width between 5 and 10 mm, and a thickness between 0.3 and 1 mm.
    [029] 2 A release film is coated in a polished straight tube module made of steel or a glazed steel that has an outer diameter of 300 mm and then the inner lining layer 1 which is between 1, 2 and 2.5 mm is manufactured in the straight tube module using a resin that has excellent anti-corrosion performance, a non-woven bamboo fiber cloth and a needled bamboo mat.
    [030] 3 After the inner lining layer 1 is cured, the bamboo strips are loaded onto a winding machine and then placed evenly on the inner lining layer 1 of the straight tube module through mechanical winding, during to which an amino resin is added according to a particular formulation to form the inner reinforcement layer 2. The wrapping of the inner reinforcement layer 2 is carried out as follows: the bamboo strips are first rolled radially to form a first radial layer to adhere to the outer surface of the inner lining layer; and the bamboo strips are then rolled axially to form a first axial layer to adhere to an outer surface of the first radial layer. A thickness of the entire internal reinforcement layer 2 is 4 mm.
    [031] 4 A uniformly mixed mixture of mineral sand and resin is then coated on the internal reinforcement layer 2 to form the thick sand-adhesive layer 3 which is 6 mm thick.
    [032] 5 The bamboo strips are rolled radially on the outer surface of the sand-adhesive thickening layer 3 to form the outer reinforcement layer 4, and the thickness of the outer reinforcement layer 4 is 2 mm.
    [033] 6 After winding, the tube is heated and cured to crosslink and cure the resin to form the integrated thermosetting bamboo-sand composite pressure tube.
    [034] 7 A layer of impermeable and anticorrosive resin with anti-radiation charge is coated outside the tube to form the outer protective layer 5 which has a thickness between 0.5 and 1 mm.
    [035] The tube is carried out with hydraulic testing, from which it is indicated that a short time failure pressure reaches 1.6 megapascals, and a stiffness reaches 15,000 N / m2.
    [036] In addition to the bamboo fiber nonwoven cloth and the needled bamboo blanket above, other types of nonwoven cloth and needled blanket can be adopted according to different means of transmission. When the pressure pipe is used in a good external environment, the thickness of the external protective layer can be much thinner, and a minimum thickness of 0.2 mm has the capacity to satisfy the protective function.
    [037] Unless otherwise indicated, the numerical ranges involved in the invention include the final values. Although the particular modalities of the invention have been shown and described, it will be obvious to those skilled in the art that changes and modifications can be made without departing from the invention in its broadest aspects and, therefore, the purpose of the attached claims is to cover all such changes and modifications as they are within the true spirit and scope of the invention.
    权利要求:
    Claims (4)
    [0001]
    1. BAMBOO COMPOSITE PRESSURE TUBE - THERMOFIXED SAND, the pressure tube comprising an inner liner layer (1) and an external protective layer (5) disposed from inside the pressure tube to outside the pressure tube in a radial direction, characterized by the fact that an internal reinforcement layer (2) formed by wrapping bamboo strips, a thickening layer of adhesive sand (3) formed by the uniformly mixed mixture of mineral sand and resin, and an external reinforcement layer (4) formed by wrapping bamboo strips, in which the internal reinforcement layer (2), the sand-adhesive thickening layer (3) and the external reinforcement layer (4) are arranged respectively between the inner liner layer (1) and the outer protective layer (5) from inside the pressure tube to outside the pressure tube; wherein in the inner reinforcement layer (2), the bamboo strips are first rolled radially to form a first radial layer to adhere to the outer surface of the inner lining layer (1); and then the bamboo strips are rolled axially to form a first axial layer to adhere to an outer surface of the first radial layer, in the outer reinforcement layer (4), the bamboo strips are first rolled axially to form a second axial layer to adhere to the outer surface of the sand-adhesive thickening layer (3); and then the bamboo strips are rolled radially to form a second radial layer to adhere to an outer surface of the second axial layer, where the inner lining layer (1), the inner reinforcement layer (2), the inner layer sand-thickening adhesive (3) and the external reinforcement layer (4) are adhered and cured in an integrated manner by heating.
    [0002]
    2. PRESSURE TUBE, according to claim 1, characterized by the fact that the bamboo strips of the internal reinforcement layer (2) and the external reinforcement layer (4) have a length between 0.5 and 2 m, a width between 5 and 10 mm and a thickness between 0.3 and 1 mm.
    [0003]
    PRESSURE TUBE, according to either of Claims 1 or 2, characterized by the fact that the external reinforcement layer (4) is formed by adhering a bamboo fiber non-woven cloth to a needled bamboo mat through of an adhesive, and the thickness of the inner lining layer (1) is between 1.2 mm and 2.5 mm.
    [0004]
    4. PRESSURE TUBE according to either claim 1 or claim 2, characterized in that the outer protective layer (5) is coated on an outer surface of the outer reinforcement layer (4), and the thickness of the layer of external protection is between 0.5 and 1.5 mm.
    类似技术:
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    同族专利:
    公开号 | 公开日
    CN203604828U|2014-05-21|
    RU2016115619A|2017-10-26|
    WO2015067164A1|2015-05-14|
    MY177891A|2020-09-24|
    EP3067609A4|2017-06-28|
    CA2927542C|2019-05-21|
    US20160245429A1|2016-08-25|
    JP2016539298A|2016-12-15|
    US9903513B2|2018-02-27|
    RU2650008C2|2018-04-06|
    ES2867674T3|2021-10-20|
    CA2927542A1|2015-05-14|
    MX370500B|2019-12-16|
    MX2016005942A|2016-12-14|
    EP3067609B1|2021-03-31|
    EP3067609A1|2016-09-14|
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    CN203604828U|2013-11-07|2014-05-21|浙江鑫宙竹基复合材料科技有限公司|Thermosetting type bamboo-sand composite pressure tube|
    CN206093233U|2016-09-01|2017-04-12|中湘环保股份有限公司|Bury to high strength formula sewage pipe|CN203604828U|2013-11-07|2014-05-21|浙江鑫宙竹基复合材料科技有限公司|Thermosetting type bamboo-sand composite pressure tube|
    CN204493928U|2015-01-09|2015-07-22|浙江鑫宙竹基复合材料科技有限公司|A kind of thermosetting bamboo wood composite pipe|
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    CN204852660U|2015-07-23|2015-12-09|浙江鑫宙竹基复合材料科技有限公司|Compound pipe of fiber crops winding|
    CN105150332B|2015-08-22|2017-09-12|浙江鑫宙竹基复合材料科技有限公司|A kind of special repairing block and its damage revamping method for bamboo composite pressure product|
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    CN105508809B|2015-12-11|2017-10-13|浙江鑫宙竹基复合材料科技有限公司|A kind of inner liner of bamboo coiled composite tube and preparation method thereof|
    CN105546230B|2016-02-02|2018-05-15|浙江鑫宙竹基复合材料科技有限公司|A kind of stalk bamboo coiled composite tube and preparation method thereof|
    CN106195464B|2016-08-26|2019-06-14|浙江鑫宙竹基复合材料科技有限公司|A kind of bamboo winding composite pressure pipe|
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    US11173634B2|2018-02-01|2021-11-16|Ina Acquisition Corp|Electromagnetic radiation curable pipe liner and method of making and installing the same|
    US10704728B2|2018-03-20|2020-07-07|Ina Acquisition Corp.|Pipe liner and method of making same|
    法律状态:
    2020-09-01| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2020-12-08| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-01-12| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 04/11/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    CN201320697993.3|2013-11-07|
    CN201320697993.3U|CN203604828U|2013-11-07|2013-11-07|Thermosetting type bamboo-sand composite pressure tube|
    PCT/CN2014/090251|WO2015067164A1|2013-11-07|2014-11-04|Thermosetting bamboo sand composite pressure pipe|
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